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1505516-40-4

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1505516-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1505516-40-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,0,5,5,1 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1505516-40:
(9*1)+(8*5)+(7*0)+(6*5)+(5*5)+(4*1)+(3*6)+(2*4)+(1*0)=134
134 % 10 = 4
So 1505516-40-4 is a valid CAS Registry Number.

1505516-40-4Downstream Products

1505516-40-4Relevant articles and documents

Synthesis of 2,2-difluoro-2H-chromenes through the tandem reaction of ethyl 3-bromo-3,3-difluoropropionate with salicylaldehyde derivatives

Ou, Song,Jiang, Min,Liu, Jin-Tao

supporting information, p. 10820 - 10825 (2014/01/06)

A series of 2,2-difluoro-2H-chromenes were synthesized from the tandem reactions of ethyl 3-bromo-3,3-difluoropropionate with salicylaldehyde derivatives in good yields under basic conditions. In acidic environment defluorination took place during the reaction. A plausible mechanism was proposed based on the experimental results.

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